A320 FLIGHT CONTROL PANEL

ELAC pb

ELAC pushbutton controls the Elevator and Aileron Computer (ELAC) 1(2).

ON : ELAC 1(2) performs the following functions :

• Normal pitch and roll, normal LAF, 
• Alternate pitch, alternate LAF, 
• Direct pitch and roll, 
• Abnormal attitude, 
• Aileron droop, 
• Acquisition of autopilot orders.

OFF : The corresponding computer is not active. To reset, switch it OFF, then ON.

FAULT : The FAULT light comes on, along with an ECAM caution:

• When a failure is detected
• During ELAC power-up test (8 s).
• Note: The ELAC power-up test occurs when electrical power is turned on, or after the occurrence of an electrical transient lasting longer than 25 ms.
• The FAULT light goes off, when flight crew selects OFF, or at the end of the ELAC power-up test, if its results are acceptable.

SEC pb

SEC pushbutton controls the Spoiler and Elevator Computer (SEC) 1(2)(3).

ON : SEC 1(2)(3) performs the following functions:

• Normal roll (by controlling the spoilers)
• Speed brakes and ground spoilers 
• Alternate pitch (SEC 1 and SEC 2 only) 
• Direct pitch (SEC 1 and SEC 2 only) 
• Direct roll 
• Abnormal attitude

OFF : The corresponding computer is not active. To reset, switch it OFF, then ON.

FAULT : The corresponding computer is failed. Associated ECAM alert comes on when a failure is detected. The FAULT light goes off when flight crew selects OFF.

FAC pb

FAC pushbutton controls the Flight Augmentation Computer (FAC) 1(2).

ON : Both FACs perform the following functions: 

• Normal roll (coordinating turns and damping dutch roll) 
• Rudder trim 
• Rudder travel limit 
• Alternate yaw 

OFF : The corresponding computer is not active. To reset, switch it OFF, then ON.

FAULT : The corresponding computer is failed. Associated ECAM alert comes on when a failure is detected. The FAULT light goes off when flight crew selects OFF.